CVE-2026-18948

CRITICALPre-NVD 9.99.9—
EchelonGraph scoreMEDIUM confidence

Score 9.9 from GitHub Security Advisory (severity: CRITICAL) published 2026-08-10. A secondary CVSS source baseline 9.9; sources differ by 0.0.

Triggered by: GitHub Security Advisory CVSS
Sources: epss, ghsa, secondary
Trending — 4 sources updated this week
9.9EG
EchelonGraph verdictPlan a fixSerious severity, but no confirmed exploitation yet.
  • High severity, but no confirmed exploitation yet
CISA-KEV: Not listedEPSS PROB: 1.1%CVSS: 9.9Exploit: None knownExposed services: Not assessed

A fix is available — apply it.

A flaw was found in Feast. The system improperly deserializes user-defined functions (UDFs) stored in its registry, which are serialized using the 'dill' library. This allows a remote attacker to store a malicious UDF, leading to unauthenticated arbitrary code execution on the feature server in default configurations. An authenticated attacker can also achieve arbitrary code execution on the registry server by bypassing authorization checks during deserialization. This vulnerability can result in cross-tenant data access and lateral movement within the system.

CVSS v3
9.9
EG Score
9.9CRITICALmedium confidence
EG Risk
45
EG Risk 45/100CISA SSVC

EG Risk is EchelonGraph's 0–100 priority score: it fuses intrinsic severity with real-world exploitation and automatability so you can rank equal-severity CVEs and fix the most dangerous first. Higher = act sooner. Distinct from the 0–10 EG Score (severity).

How it’s computed
Severity99% × 45%
Exploitation1% × 40%
Automatability0% × 15%
CISA SSVC: Track at low or medium mission impact; Track* at high (mission-essential systems).
Action: A fix is available. Apply it within your standard update timelines.
EPSS PROB
1.1%
EPSS %ILE
63rd
KEV
Not listed

CISA SSVCTrack at low or medium mission impact; Track* at high (mission-essential systems).

A fix is available. Apply it within your standard update timelines.

Exploitation none (CISA Vulnrichment) · Automatable no (CISA Vulnrichment) · Technical impact total (CISA Vulnrichment). Mission impact is CISA's Mission & Well-being decision point, and only you can judge it: high means the affected system is essential to your organisation's mission, or its compromise could cause irreversible harm to people. CISA's decision table

Published

August 10, 2026

Last Modified

September 28, 2026

Advisory Details (6)

Auto-updated Oct 5, 2026
Patch available. Sources: redhat.
redhat

2511167 – (CVE-2026-18948) CVE-2026-18948 feast: Feast: Unsafe dill deserialization of registry-stored UDFs — RCE on feature server and registry server

https://bugzilla.redhat.com/show_bug.cgi?id=2511167
redhat Patch Available

CVE-2026-18948 - Red Hat Customer Portal

Affected: Red Hat Enterprise Linux 8 or OpenShift Container Platform 4, is affected by this vulnerability and a fix may be released to a

https://access.redhat.com/security/cve/CVE-2026-18948
redhat Patch Available
https://access.redhat.com/errata/RHSA-2026:60520
redhat Patch Available
https://access.redhat.com/errata/RHSA-2026:53263
redhat Patch Available
https://access.redhat.com/errata/RHSA-2026:53262
redhat Patch Available
https://access.redhat.com/errata/RHSA-2026:53261

Vendor Advisories for CVE-2026-18948(5)

These vendors published their own advisory mentioning this CVE — often with vendor-specific remediation steps + affected product lists not in NVD.

Patch Availability(4)

Vendor / EcosystemFix (by version range) / PatchReleasedSource
redhatrhoai/odh-feature-server-rhel9:17870680652026-08-27redhat
redhatrhoai/odh-feature-server-rhel9:17861072782026-08-11redhat
redhatrhoai/odh-feature-server-rhel9:17861100332026-08-11redhat
redhatrhoai/odh-feature-server-rhel9:17861100512026-08-11redhat

Patches are aggregated from vendor advisories (Red Hat, Microsoft, Cisco, GitHub) and package ecosystems (OSV, GHSA). Multiple rows for the same upstream release have been deduplicated.

Weakness Classification(1)

MITRE Common Weakness Enumeration — the root-cause categories this CVE belongs to.

Data Freshness Timeline

(refreshed 47× in last 7d / 281× in last 30d)

Each row is a source pipeline that fetched or updated this CVE on that date, with what changed. For example, "NVD update" means NVD published or revised its analysis for this CVE; "MITRE cvelistV5" means we ingested or refreshed it from the CNA feed. Most recent first.

Showing the most recent 100 of 629 total refreshes for this CVE.

  1. 2026-10-05 07:43 UTCVendor advisory
  2. 2026-10-05 07:43 UTCGHSA enrichment
  3. 2026-10-05 02:42 UTCEG score recompute
  4. 2026-10-05 02:42 UTCVendor advisory
  5. 2026-10-05 02:42 UTCGHSA enrichment
  6. 2026-10-04 23:21 UTCEPSS rescore
  7. 2026-10-04 22:49 UTCVendor advisory
  8. 2026-10-04 22:49 UTCGHSA enrichment
  9. 2026-10-04 16:38 UTCVendor advisory
  10. 2026-10-04 16:38 UTCGHSA enrichment
  11. 2026-10-04 12:24 UTCVendor advisory
  12. 2026-10-04 12:24 UTCGHSA enrichment
  13. 2026-10-04 08:17 UTCVendor advisory
  14. 2026-10-04 08:17 UTCGHSA enrichment
  15. 2026-10-04 04:17 UTCVendor advisory
  16. 2026-10-04 04:17 UTCGHSA enrichment
  17. 2026-10-03 22:46 UTCEG score recompute
  18. 2026-10-03 22:46 UTCVendor advisory
  19. 2026-10-03 22:46 UTCGHSA enrichment
  20. 2026-10-03 02:35 UTCVendor advisory
  21. 2026-10-03 02:35 UTCGHSA enrichment
  22. 2026-10-02 22:34 UTCEG score recompute
  23. 2026-10-02 22:34 UTCVendor advisory
  24. 2026-10-02 22:34 UTCGHSA enrichment
  25. 2026-10-02 16:19 UTCVendor advisory
Show 75 more
  1. 2026-10-02 16:19 UTCGHSA enrichment
  2. 2026-10-02 09:16 UTCEG score recompute
  3. 2026-10-02 09:16 UTCVendor advisory
  4. 2026-10-02 09:16 UTCGHSA enrichment
  5. 2026-10-01 19:49 UTCEPSS rescore
  6. 2026-10-01 13:55 UTCVendor advisory
  7. 2026-10-01 13:55 UTCGHSA enrichment
  8. 2026-10-01 10:02 UTCVendor advisory
  9. 2026-10-01 10:02 UTCGHSA enrichment
  10. 2026-10-01 06:09 UTCVendor advisory
  11. 2026-10-01 06:09 UTCGHSA enrichment
  12. 2026-10-01 02:16 UTCVendor advisory
  13. 2026-10-01 02:16 UTCGHSA enrichment
  14. 2026-09-30 22:24 UTCEG score recompute
  15. 2026-09-30 22:24 UTCVendor advisory
  16. 2026-09-30 22:24 UTCGHSA enrichment
  17. 2026-09-30 15:02 UTCEPSS rescore
  18. 2026-09-29 15:20 UTCEPSS rescore
  19. 2026-09-29 05:20 UTCEG score recompute
  20. 2026-09-29 05:20 UTCVendor advisory
  21. 2026-09-29 05:20 UTCGHSA enrichment
  22. 2026-09-28 13:51 UTCEPSS rescore
  23. 2026-09-28 10:38 UTCEG score recompute
  24. 2026-09-28 10:38 UTCVendor advisory
  25. 2026-09-28 10:38 UTCGHSA enrichment
  26. 2026-09-28 09:58 UTCEG score recompute
  27. 2026-09-28 09:58 UTCVendor advisory
  28. 2026-09-28 09:58 UTCGHSA enrichment
  29. 2026-09-28 06:14 UTCVendor advisory
  30. 2026-09-28 06:14 UTCGHSA enrichment
  31. 2026-09-28 02:22 UTCVendor advisory
  32. 2026-09-28 02:22 UTCGHSA enrichment
  33. 2026-09-27 16:56 UTCEG score recompute
  34. 2026-09-27 16:56 UTCVendor advisory
  35. 2026-09-27 16:56 UTCGHSA enrichment
  36. 2026-09-27 13:47 UTCEPSS rescore
  37. 2026-09-27 11:09 UTCEG score recompute
  38. 2026-09-27 11:09 UTCVendor advisory
  39. 2026-09-27 11:08 UTCGHSA enrichment
  40. 2026-09-26 15:58 UTCEPSS rescore
  41. 2026-09-25 12:09 UTCVendor advisory
  42. 2026-09-25 12:09 UTCGHSA enrichment
  43. 2026-09-25 07:53 UTCVendor advisory
  44. 2026-09-25 07:53 UTCGHSA enrichment
  45. 2026-09-25 03:59 UTCEG score recompute
  46. 2026-09-25 03:59 UTCVendor advisory
  47. 2026-09-25 03:59 UTCGHSA enrichment
  48. 2026-09-24 12:41 UTCVendor advisory
  49. 2026-09-24 12:41 UTCGHSA enrichment
  50. 2026-09-24 08:47 UTCVendor advisory
  51. 2026-09-24 08:47 UTCGHSA enrichment
  52. 2026-09-24 04:55 UTCVendor advisory
  53. 2026-09-24 04:55 UTCGHSA enrichment
  54. 2026-09-24 01:02 UTCVendor advisory
  55. 2026-09-24 01:01 UTCGHSA enrichment
  56. 2026-09-23 21:09 UTCEG score recompute
  57. 2026-09-23 21:09 UTCVendor advisory
  58. 2026-09-23 21:09 UTCGHSA enrichment
  59. 2026-09-23 13:34 UTCVendor advisory
  60. 2026-09-23 13:34 UTCGHSA enrichment
  61. 2026-09-23 08:53 UTCVendor advisory
  62. 2026-09-23 08:53 UTCGHSA enrichment
  63. 2026-09-23 05:01 UTCVendor advisory
  64. 2026-09-23 05:01 UTCGHSA enrichment
  65. 2026-09-23 01:08 UTCVendor advisory
  66. 2026-09-23 01:08 UTCGHSA enrichment
  67. 2026-09-22 21:15 UTCEG score recompute
  68. 2026-09-22 21:15 UTCVendor advisory
  69. 2026-09-22 21:15 UTCGHSA enrichment
  70. 2026-09-22 14:05 UTCVendor advisory
  71. 2026-09-22 14:05 UTCGHSA enrichment
  72. 2026-09-22 10:10 UTCVendor advisory
  73. 2026-09-22 10:10 UTCGHSA enrichment
  74. 2026-09-22 05:41 UTCVendor advisory
  75. 2026-09-22 05:41 UTCGHSA enrichment

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Frequently asked(5)

What is CVE-2026-18948?
CVE-2026-18948 is a critical vulnerability published on August 10, 2026. A flaw was found in Feast. The system improperly deserializes user-defined functions (UDFs) stored in its registry, which are serialized using the 'dill' library. This allows a remote attacker to store a malicious UDF, leading to unauthenticated arbitrary code execution on the feature server in…
When was CVE-2026-18948 disclosed?
CVE-2026-18948 was first published on August 10, 2026, with the most recent update on September 28, 2026. EchelonGraph re-ingests CVE updates from NVD on a 2-hour cycle, so this page reflects the latest published state.
Is CVE-2026-18948 actively exploited?
CVE-2026-18948 is not currently on CISA's Known Exploited Vulnerabilities catalog. FIRST EPSS estimates a 1.1% probability of exploitation in the next 30 days (63rd percentile of EPSS-scored CVEs).
What is the CVSS score of CVE-2026-18948?
CVE-2026-18948 has a CVSS base score of 9.9 (a secondary CVSS source that NVD displays; NVD's own analysis pending).
How do I remediate CVE-2026-18948?
A fix for CVE-2026-18948 is available: update to the fixed version the vendor names in its advisory. The vendor advisories EchelonGraph has for CVE-2026-18948 are linked in the Vendor Advisories panel on this page.

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